Exhibit 5
Certification Under Rule 466
The Depositary, The Bank of New York Mellon, represents and certifies the following:
| (1) | That it previously has filed a Registration Statement on Form F-6 (A2A SpA No. 333-154597) which the Commission declared effective, with terms of deposit identical to the terms of deposit of this Registration Statement except for the number of foreign securities a Depositary Share represents. |
| (2) | That its ability to designate the date and time of effectiveness under Rule 466 has not been suspended. |
THE BANK OF NEW YORK MELLON,
As Depositary
By: /s/ Joanne Di Giovanni Hawke
Name: Joanne Di Giovanni Hawke
Title: Director
